tpie::cpu_timer Class Reference

Public Member Functions
void	start ()
	Start the timer. More...
void	stop ()
	Stop the timer. More...
void	sync ()
	Update fields such that running(), clock_tick(), elapsed(), elapsed_real() will return recent measurements. More...
void	reset ()
	Reset the timer to zero. More...
double	user_time ()
	Linux: Query the amount of time spent by this process in user mode since the timer was reset. More...
double	system_time ()
	Linux: Query the amount of time spent by this process in kernel mode since the timer was reset. More...
double	wall_time ()
	Query the amount of wall clock time spent by this process since the timer was reset. More...
bool	running () const
	Tell whether the timer is currently running. More...
long	clock_tick () const
	Return number of ticks per wall clock second as reported by the OS. More...
tms	last_sync () const
	Return the timestamp of last sync. More...
tms	elapsed () const
	Return the timestamp indicating the elapsed time. Only useful on Linux. More...
clock_t	last_sync_real () const
	Return the wall clock timestamp of the last sync. More...
clock_t	elapsed_real () const
	Return the elapsed wall clock time at the last sync. More...

Detailed Description

Definition at line 52 of file cpu_timer.h.

Member Function Documentation

long tpie::cpu_timer::clock_tick ( ) const

inline

Return number of ticks per wall clock second as reported by the OS.

Definition at line 126 of file cpu_timer.h.

                                   {
        return clock_tick_;
    }

tms tpie::cpu_timer::elapsed ( ) const

inline

Return the timestamp indicating the elapsed time. Only useful on Linux.

Definition at line 140 of file cpu_timer.h.

                               {
        return elapsed_;
    }

clock_t tpie::cpu_timer::elapsed_real ( ) const

inline

Return the elapsed wall clock time at the last sync.

Definition at line 154 of file cpu_timer.h.

                                        {
        return elapsed_real_;
    }

tms tpie::cpu_timer::last_sync ( ) const

inline

Return the timestamp of last sync.

Definition at line 133 of file cpu_timer.h.

                                 {
        return last_sync_;
    }

clock_t tpie::cpu_timer::last_sync_real ( ) const

inline

Return the wall clock timestamp of the last sync.

Definition at line 147 of file cpu_timer.h.

                                          {
        return last_sync_real_;
    }

void tpie::cpu_timer::reset

(

)

Reset the timer to zero.

bool tpie::cpu_timer::running ( ) const

inline

Tell whether the timer is currently running.

Definition at line 119 of file cpu_timer.h.

                                {
        return running_;
    }

void tpie::cpu_timer::start

(

)

Start the timer.

void tpie::cpu_timer::stop

(

)

Stop the timer.

void tpie::cpu_timer::sync

(

)

Update fields such that running(), clock_tick(), elapsed(), elapsed_real() will return recent measurements.

double tpie::cpu_timer::system_time

(

)

Linux: Query the amount of time spent by this process in kernel mode since the timer was reset.

Windows: Query the amount of wall clock time spent by this process since the timer was reset.

double tpie::cpu_timer::user_time

(

)

Linux: Query the amount of time spent by this process in user mode since the timer was reset.

Windows: Query the amount of wall clock time spent by this process since the timer was reset.

double tpie::cpu_timer::wall_time

(

)

Query the amount of wall clock time spent by this process since the timer was reset.

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The documentation for this class was generated from the following file:

• cpu_timer.h